12x 3.5" HDDs spinning up simultaneously can spike ~240W, pushing a single 750W PSU close to its limit. Two-layer fix: - Layer 1: racadm iDRAC BIOS setting (HddSeq) fires at POST before OS loads - Layer 2: stagger-spinup.service wakes drives one at a time via hdparm on boot https://claude.ai/code/session_01TxTSnxDjgEVuNztdsWQjMD
17 lines
450 B
Desktop File
17 lines
450 B
Desktop File
[Unit]
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Description=Stagger hard drive spin-up to limit PSU current surge
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# Runs early in boot, before storage services and VMs start, so drives
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# are already spun up and staggered before any heavy I/O begins.
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DefaultDependencies=no
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After=local-fs-pre.target
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Before=local-fs.target sysinit.target
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[Service]
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Type=oneshot
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ExecStart=/usr/local/sbin/stagger-spinup.sh --linux
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RemainAfterExit=yes
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StandardOutput=journal
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[Install]
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WantedBy=sysinit.target
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